Disposable diapers
CA 2096467 C · Owner: Uni-Charm Corporation · Inventors: Sayama, Yasushi; Matsushita, Michiyo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To assure that a front end 27 of release tape 21 upon which an adhesive surface of fastening tape 20 be never peeled off from a diaper during use of the diaper the fastening tape 20 is laid upon the release tape 21 with a nonadhesive pick-up lobe 23 of the fastening tape 20 projecting forward beyond the front end 27 of the release tape 21.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 18, 1993 and granted December 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.